Thanks for the additional info. I'm the one that uploaded this. I had a feeling there was probably an Asian repository where this was located. I checked out the other halloween maps I have. Info about them below based on the versions I have, which may be outdated.

halloween_construction: Appears to be complete and is pretty cool. I can't tell if it's actually complete as the final door requires 2 buttons to be pressed simultaneously. NoClipping indicates there are no other parts of the map, so the dual buttons must end the map, even though I wish there was more.

halloween_cemetery: Finished. Pretty short and straight forward, but at least complete.

halloween_inquisitor_a: Very unfinished. Just one small area and nothing is textured.

halloween_blackwoods: Very unfinished. Just one small area and nothing is textured.

I'll get around to uploading Construction and Cemetery. No point on the other ones.

╭(▔▽▔)╮ I was made this svencoop map in 2014, and made some change in 2017.
In this map，those ways are very complicated and some unreasonable design，like the buttons on the 1 floor.
When itwas finished，I played this map a lot of times with my friends.
I found players often get lost and the lights was so dark.
Most of time，They dot know where should to go and what to do next.
You need to remember some structures of the map，and pass through those TV screens、pictures，then you can get into next area. but who knows? They just stay in a place kill those zombies without stop.That was a problem.
So I did't upload it to SCmapDB.
However.. It's okay if you like this map :3

Was playing with a few others and at one point the door on the top floor (leading to the area with orange colored wallpaper) opened but we couldn't pass through. We'd just get pushed back from the doorway.

Eventually we found and destroyed all blue cubes, then it showed a cutscene where that door is supposed to open and the text on-screen even says "door is now open" but it showed the door kind of glitch, then close. We tried, but couldn't get through.

So I think there's a glitch with that particular door "opening" before it should, which prevents completion of the map.